The life and crimes of Khaled Sharrouf

The sectarian wars in Syria and Iraq continue to shock the international community with almost daily revelations of extreme barbarity.

Muslim Australians are participating in the conflict, and this week Sydney tweeted a photo of his son holding the severed head of a Syrian soldier.

US Secretary of State John Kerry and Australian Foreign Minister Julie Bishop have said they will push for a meeting at the United Nations in September to examine the issue of foreign fighters participating in conflicts abroad.